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/* Copyright (C) 2000 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/*
Static variables for mysys library. All definied here for easy making of
a shared library
*/
#ifndef DRIZZLED_INTERNAL_MY_STATIC_H
#define DRIZZLED_INTERNAL_MY_STATIC_H
#include <signal.h>
#define MAX_SIGNALS 10 /* Max signals under a dont-allow */
#define MIN_KEYBLOCK (min(IO_SIZE,1024))
#define MAX_KEYBLOCK 8192 /* Max keyblocklength == 8*IO_SIZE */
#define MAX_BLOCK_TYPES MAX_KEYBLOCK/MIN_KEYBLOCK
namespace drizzled
{
namespace internal
{
/*
Structure that stores information of a allocated memory block
The data is at &struct_adr+sizeof(ALIGN_SIZE(sizeof(struct irem)))
The lspecialvalue is at the previous 4 bytes from this, which may not
necessarily be in the struct if the struct size isn't aligned at a 8 byte
boundary.
*/
class irem
{
public:
irem *next; /* Linked list of structures */
irem *prev; /* Other link */
char *filename; /* File in which memory was new'ed */
uint32_t linenum; /* Line number in above file */
uint32_t datasize; /* Size requested */
uint32_t SpecialValue; /* Underrun marker value */
irem():
next(NULL),
prev(NULL),
filename(0),
linenum(0),
datasize(0),
SpecialValue(0)
{}
};
extern char curr_dir[FN_REFLEN], home_dir_buff[FN_REFLEN];
extern volatile int _my_signals;
extern unsigned char *sf_min_adress,*sf_max_adress;
extern uint sf_malloc_count;
extern class irem *sf_malloc_root;
extern uint64_t query_performance_frequency, query_performance_offset;
extern sigset_t my_signals; /* signals blocked by mf_brkhant */
} /* namespace internal */
} /* namespace drizzled */
#endif /* DRIZZLED_INTERNAL_MY_STATIC_H */
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